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Voice API for Windows Operating Systems Library Reference — November 2003 91
return the frequency of the third SIT sequence — ATDX_FRQHZ3( )
ATDX_FRQHZ3( )
return the frequency of the third SIT sequence
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! Description
The ATDX_FRQHZ3( ) function returns the frequency in Hz of the third Special Information
Tone (SIT) sequence after dx_dial( ) has terminated due to an Operator Intercept.
Termination due to Operator Intercept is indicated by ATDX_CPTERM( ) returning CR_CEPT.
For information on SIT frequency detection, see the Voice API Programming Guide.
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! Cautions
None.
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! Errors
This function fails and returns AT_FAILURE if an invalid channel device handle is specified.
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! Example
See the example for ATDX_FRQHZ( ).
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! See Also
• dx_dial( )
• ATDX_CPTERM( )
• DX_CAP structure
• call progress analysis topic in the Voice API Programming Guide
• ATDX_FRQHZ( )
Name: long ATDX_FRQHZ3(chdev)
Inputs: int chdev
• valid channel device handle
Returns: third tone frequency in Hz if success
AT_FAILURE if error
Includes: srllib.h
dxxxlib.h
Category: Extended Attribute
Mode: synchronous
Platform: Springware
Parameter Description
chdev specifies the valid channel device handle obtained when the channel was opened
using dx_open( )